JP2000298709A - Memory card - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a memory card whose general-purpose properties and handling are improved. SOLUTION: A recessed part 3A of a main base plate 3 is opened, and a sub-base plate 4 is held to be inserted to and pulled out from this open part. The bottom part of the recessed part 3A is constituted of a metallic plate 6, and the end part of the open part is folded. Thus, stability at insertion and pulling-out operations or the like can be improved, and the sense of clicking at the time of the end of mounting can be obtained by forming the folded part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a memory card.

[0002]

2. Description of the Related Art Conventionally, a plurality of types of small memory cards having different sizes, structures, and the like are known, and they are called, for example, compact flash, smart media, and the like. Such a small memory card, for example,
It is loaded into a digital camera or the like and stores data such as captured images. In addition, such a small memory card is attached to a card-type adapter corresponding to a card slot of a so-called notebook-type personal computer, and the card-type adapter is inserted into and connected to the card slot. Data is also exchanged between the parties. Further, it has been proposed that such a small memory card is inserted into and connected to a portable information device to exchange data with the device.

FIG. 27 is a plan view showing an example of the above-mentioned small memory card. At a predetermined position on one side of a plastic base plate 1, a chip of a memory IC and a chip of the memory IC to which the chip is fixed are attached. A terminal plate 2 having a plurality of (for example, 22) contact type terminals 2A constituting an external terminal is embedded, and this terminal plate 2 is arranged on one side surface of the base plate 1 and on the back side of the terminal plate 2. The memory IC chip is located (ie, the memory IC chip is not visible from the outside). Therefore, the base plate and the memory I
It is inseparable from the C chip. Then, such a memory card is attached to a predetermined location of a counterpart device (for example, a digital camera, a card-type adapter, etc.), and the terminals of the terminal plate 2 are connected to a contact-type connection portion of a predetermined location of the counterpart device. , An electrical connection is made between the memory IC and the other device.

[0004]

The size of the above-mentioned memory card is determined. For example, smart media is about 37mm wide, about 45mm high, and about 0.7m thick
m.

Therefore, such a memory card is
Its use is limited. That is, for example, with respect to smart media, the other party's device is limited to a device that can mount the smart media or a device that can be connected to the smart media via an adapter. The device cannot connect to SmartMedia. For example, it is difficult to attach a smart media to a very small device such as a mobile phone.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to provide a memory card which can be mounted on a smaller device by adopting a structure separable from a base plate. And

Another object of the present invention is to provide a memory card that can be safely inserted into and removed from a base plate.

Another object of the present invention is to provide a memory card which can be securely attached to and detached from a base plate.

A further object of the present invention is to provide a memory card which can be adapted to various memory card standards by being detachably mounted on a base plate.

[0010]

According to a first aspect of the present invention, there is provided a memory chip board in which a memory chip and an external terminal of the memory chip are integrated, and a sub chip on which the memory chip board is fixed. A base plate, and a main base plate having a predetermined size connectable to an electronic device and holding the sub base plate at a predetermined position so as to be able to be inserted and withdrawn.

According to a second aspect of the present invention, in the first aspect, the main base plate is opened at one end of the main base plate at the predetermined position, and the sub base plate is opened from the open portion. A bottom portion of the recess is made of a metal plate coated on one or both sides thereof, and a part of the bottom portion of the recess projects higher than other bottom portions. It is characterized by.

Further, the invention of claim 3 is characterized in that, in claim 2, the coating is one of a thermoplastic resin and a thermosetting resin or a combination of both.

According to a fourth aspect of the present invention, in the first aspect, the main base plate is opened at one end of the main base plate at the predetermined position, and the sub base plate is opened from the open portion. And a bottom portion of the recess is made of a metal plate, and a part of the bottom portion of the recess protrudes higher than other bottom portions.

The invention of claim 5 is characterized in that, in any one of claims 2 to 4, a portion of the sub-base plate corresponding to the projecting portion is concave.

Further, the invention according to claim 6 is characterized in that, in any one of claims 2 to 5, the protruding portion is a folded portion formed at an end of the open portion of the metal plate.

Further, the invention of claim 7 is characterized in that, in claim 6, notches are formed on both sides of the folded portion.

Further, the invention of claim 8 is characterized in that, in any one of claims 2 to 5, the protruding portion is provided near the other end of the main base plate.

In a ninth aspect of the present invention, in any one of the second to fifth aspects, the protruding portion is a tape-like member bonded to an end of the open portion of the metal plate. .

In a tenth aspect of the present invention, in the ninth aspect, a tape-shaped member is further adhered to the back side of the end of the open portion of the metal plate.

Further, the invention of claim 11 is the invention of claims 2 to 5
Wherein the protruding portion is a bent portion of an end of the open portion of the metal plate.

Further, the invention of claim 12 is the invention of claims 2 to 1
In any one of the first to third aspects, both sides of the concave portion are the sub-
A guide groove is provided for guiding both sides of the base plate.

According to a thirteenth aspect of the present invention, in the twelfth aspect, the open portion of the concave portion has substantially the same width as the sub-base plate, and a portion in contact with the guide groove has a diagonal notch. It is characterized by having been done.

Further, the invention of claim 14 is characterized by a memory card comprising the memory chip plate and the sub-base plate of claim 1.

[0024]

FIG. 1 is a perspective view showing an embodiment of the present invention, showing a state before a sub-base plate is mounted on a main base plate. FIG. 2 is another perspective view showing the same embodiment, and shows a state after the sub base plate is mounted and held on the main base plate. This embodiment is applied to a memory card called a smart media.

As shown in FIG. 1, reference numeral 3 denotes a main base plate, and a substantially rectangular recess 3A formed at a predetermined position thereof is opened at one end of the main base plate 3. From this open portion, a sub-base plate 4 having substantially the same size as the recess 3A is inserted and held in the direction of the arrow in FIG. Further, as shown in FIG. 2, by extracting the sub base plate 4 from the main base plate 3 in the direction of arrow B, the sub base plate 4 is removed from the main base plate 3.
Can be removed.

The sub-base plate 4 is made of plastic and has a hole formed in the center thereof (see FIGS. 6 to 8). The peripheral portion of the memory chip plate 5 is fixed to the periphery of the hole with an adhesive or the like. I have. The memory chip plate 5 has an I
C memory chip is electrically connected and then sealed and fixed.
On its front side, the external terminals of the memory chip are formed.
The contact type terminals 5A are arranged.

As will be described in detail later, the bottom of the concave portion 3A formed at a predetermined position of the main base plate 3 is made of a reinforcing metal plate (for example, a stainless steel plate) 6. Is folded back to form a step that rises upward at the end.

One or both surfaces of the metal plate 6 are coated for insulation (the same applies to the metal plates shown in the following drawings).

The present invention can be applied to an uncoated metal plate if necessary.

The coating is one or a combination of a thermoplastic resin and a thermosetting resin;
Examples of the thermoplastic resin include polyolefin, nylon, polyester, and polyetherimide, and examples of the thermosetting resin include epoxy and polyester. Also, as shown in FIG. 5, this metal plate 6
A part of the back side is recessed by the thickness of the metal plate 6 so as to be fixed to a part of the back side of the main base plate 3 with an adhesive and to be flush with the remaining part of the back side. I have.

As shown in FIGS. 1 and 12 (partial sectional views in the direction of arrow C in FIG. 2), guide grooves 7 are formed on both sides of a concave portion 3A formed at a predetermined position of the main base plate 3. . That is, both sides of the concave portion 3A are cut obliquely from the upper end to the bottom, and both sides of the sub-base plate 4 are inclined from the upper end to the lower end so as to face the guide groove 7. (This inclined portion is indicated by 8 in FIG. 12), when the sub-base plate 4 is inserted into the concave portion 3A,
The inclined portions on both sides of the sub-base plate 4 contact the guide grooves 7 on both sides of the concave portion 3A. That is, the sub base plate 4
Is in a state fitted in the recess 3A. Therefore, when the sub base plate 4 is inserted into or removed from the recess 3A formed at a predetermined position of the main base plate 3, the inclined portions on both sides of the sub base plate 4 are inserted into the guide grooves 7 on both sides of the recess 3A. Slides (guided) along the sub base plate 4
Insertion and removal are performed smoothly.

The main base plate 3 is
When inserting and removing the base plate 4, one end of the sub base plate 4 is pinched by a finger, and two recesses 9 are formed in one end of the front side of the sub base plate 4. Since the recess 9 provides resistance to the surface of the finger, the sub-base plate 4 is securely held between the fingers, and the insertion and removal is more reliably performed. An oblique notch 10 is formed on one side of the other end of the sub-base plate 4, and the other end of the concave portion 3A of the main base plate 3 is correspondingly formed. Since one side is inclined, when inserting and removing the sub-base plate 4, the front and back and the insertion direction are not mistaken.

FIG. 3 shows a partial cross section in the direction of arrow A in FIG. 2, and shows a state of the folded portion of the end of the metal plate 6. That is, in the example of this figure, the end portion of the metal plate is folded downward, and the lower surface of the folded portion is flush with the lower surface of the remaining metal plate 6.
This folded portion is higher than the remaining bottom of the recess 3A. Further, a portion corresponding to the folded portion at the one end on the back side of the sub base plate 4 is recessed (that is, the step portion 28 is formed). According to such a structure, the following remarkable effects can be obtained. That is, the metal plate 6 is extremely thin and its edge is sharp. If no processing is performed as it is, an injury may occur when the main base plate 3 is handled at the time of insertion / extraction operation of the sub base plate 4 or the like. However, the end of the open portion of the main base plate 3 is smooth (because it is folded back), which is safe when the main base plate 3 is handled. When the sub base plate 4 is inserted into the recess 3A of the main base plate 3,
The base plate 4 is in a state where the inclined portions on both sides thereof come into contact with the guide grooves 7 on both sides of the recess 3A and are pressed in a direction away from the bottom surface of the recess 3A. Is pushed back by a slight pressure to the turn-back portion. Therefore, when the sub-base plate 4 is inserted, a slight resistance is obtained. Immediately before the sub base plate 4 is completely mounted in the concave portion 3A of the main base plate 3 (the state shown in FIG. 2), one end on the back side of the sub base plate 4 is provided in the folded portion of the metal plate 6. Is reached and the pressure from the folded portion of the metal plate 6 against the sub-base plate 4 disappears. At this time, the person who is performing the operation of inserting the sub-base plate 4 has a so-called click feeling. Is obtained, and it is possible to reliably know that the sub base plate 4 is completely mounted in the recess 3A of the main base plate 3. Further, the presence of the folded portion prevents the sub base plate 4 from coming off the main base plate 3.

FIG. 4 is a partial cross-sectional view showing another mode of folding the metal plate 6, in which the end of the metal plate 6 is folded upward, and the folded portion is formed in the concave portion 3A.
The rest is higher than the bottom. Therefore, the same effect as the folded portion in FIG. 3 can be obtained in this folded portion.

FIGS. 6 to 8 show another embodiment of the sub-base plate 4 itself, each of which has a feature in a structure for giving a sense of resistance to the operator's finger at the time of the insertion / extraction operation. That is, FIG. 6 shows an arc-shaped depression 11 formed at one end on the front side, and FIG. 7 shows a tape 12 having a surface with a high coefficient of friction attached to one end on the front side. 8, FIG. 8 shows a case where the front side surface is a textured surface 13, and any of these can give a sufficient resistance to the operator's finger.

FIG. 9 shows another embodiment of the concave portion 3A of the main base plate 3, wherein the open portion of the concave portion 3A is
The concave portion 3A has a width substantially equal to that of the sub-base plate 4.
Steps 14 are formed at both ends on both sides of the step 14. As shown in FIG. 11 (partial sectional view in the direction of arrow A in FIG.
Notches 15 are formed obliquely from the upper end to the bottom at portions contacting the guide grooves 7 on both sides of the concave portion 3A. Therefore, due to the presence of the notch 15, when the sub base plate 4 is inserted into the recess 3A of the main base plate 3, both sides of the insertion tip portion of the sub base plate 4 are on both sides of the recess 3A. And smoothly enters the guide groove 7, thereby further improving the operability at the time of insertion.

FIG. 10 shows another embodiment relating to the attachment of the main base plate 3 to the metal plate. In this embodiment, the main base plate 3 is bent around the metal plate 6 (excluding the end of the open portion of the recess 3A). A portion 6A is formed, and the metal plate 6 is placed in a mold and filled with resin. As a result, the metal plate 6 is fixedly integrated with the resin portion, and a material equivalent to the one fixed with the above-mentioned adhesive is obtained.

FIG. 13 is a perspective view showing another embodiment of the metal plate 6, showing a state before the sub base plate is mounted on the main base plate. FIG. 14 is another perspective view showing the same embodiment, and shows a state after the sub-base plate is mounted and held on the main base plate.

In this embodiment, a projection 17 is formed on the metal plate 6 near the other end of the main base plate 3. As shown in FIG. 15 which is a partial cross-sectional view in the direction of arrow A in FIG.
That is, it is higher than the remaining bottom portion of the recess 3A. As shown in FIG. 15 and FIG. 16 which is a perspective view of the back surface of the sub-base plate 4, a portion corresponding to the projection 17 at the other end on the back side of the sub-base plate 4 is provided with a recess 18.
Are formed. The end of the metal plate 6 corresponding to the open portion of the recess 3A is flat, and the one end on the back side of the sub-base plate 4 is also flat. Other configurations are the same as those in FIGS.

With the above configuration, a person who is performing the insertion operation of the sub-base plate 4 can obtain a so-called click feeling similarly to the examples of FIGS. 1 to 3 described above. That is, when the sub-base plate 4 is inserted into the concave portion 3A of the main base plate 3, the inclined portions on both sides of the sub-base plate 4 come into contact with the guide grooves 7 on both sides of the concave portion 3A. Insertion is made. Then, the sub base plate 4 is completely mounted in the recess 3A of the main base plate 3 (FIG. 14).
Immediately before), the insertion tip of the sub-base plate 4 comes into contact with the projection 17 of the metal plate 6, causing a feeling of resistance to the insertion operator. When the insertion is further advanced, the sub-base plate 4 , The operator is constantly pushed back, and the operator maintains a certain resistance. Then, at the moment when the recess 18 of the sub-base plate 4 reaches the protrusion 17, that is, at the moment when the recess 18 is fitted to the protrusion 17, the pushing back pressure from the protrusion 17 against the sub-base plate 4 disappears. In addition, a person who is performing the insertion operation of the sub base plate 4 can obtain a so-called click feeling,
It is possible to reliably know that the sub-base plate 4 has been completely mounted. Also, the presence of the projections 17 prevents the sub base plate 4 from coming off the main base plate 3.

FIG. 17 is a perspective view showing still another embodiment of the metal plate 6, showing a state before the sub-base plate is mounted on the main base plate. FIG. 14 is another perspective view showing the same embodiment, and shows a state after the sub-base plate is mounted and held on the main base plate.

In this embodiment, the tape 19 is adhered to the metal plate 6 at the open portion of the concave portion 3A of the main base plate 3. The thickness of the tape 19 is, for example, 0.15 to
It is about 0.2 mm. The tape 20 can be bonded to the surface of the metal plate 6 opposite to the surface where the tape 19 is bonded, if necessary.

As shown in FIG. 19, which is a partial cross-sectional view in the direction of arrow A in FIG. 18, the tape 19 is higher than the remaining surface of the metal plate 6, ie, the remaining bottom of the recess 3A. . As shown in FIG. 19, a portion corresponding to the tape 19 at one end on the back side of the sub-base plate 4 is concave (that is, a step portion 21 is formed).

In such a configuration, a remarkable effect similar to the example of FIGS. 1 to 3 can be obtained. That is, the end of the open portion of the main base plate 3 is moderately thick and smooth due to the presence of the tape 19 (and the tape 20 provided as necessary). For this reason, the main
It is safe when handling the base plate 3 and the like. Also, when inserting the sub-base plate 4 into the recess 3A of the main base plate 3, the lower surface of the sub-base plate 4 is bonded to the metal plate 6 in the same manner as in the example of FIGS. The tape 19 is pushed back from the part of the tape 19 with a slight pressure. Therefore, when the sub-base plate 4 is inserted, a slight resistance is obtained. Immediately before the sub base plate 4 is completely mounted in the concave portion 3A of the main base plate 3 (the state shown in FIG. 18), the tape 19 on the metal plate 6 is provided on the back side of the sub base plate 4. The step 21 at one end reaches and the tape 19 of the metal plate 6 with respect to the sub-base plate 4
Since the pressure from the portion disappears, the person who is performing the operation of inserting the sub-base plate 4 can obtain a so-called click feeling, and the sub-sub-plate 4 is inserted into the concave portion 3A of the main base plate 3.
It is possible to reliably know that the base plate 4 has been completely mounted. Further, the presence of the tape 19 prevents the sub base plate 4 from coming off the main base plate 3. Further, since another tape 20 is provided on the back side of the tape 19, when the sub-base plate 4 is inserted into and removed from the main base plate 3, the
Gives a sense of resistance, so that the operation of inserting and removing the sub-base plate 4 can be performed more reliably. In addition, in this embodiment, further, at each end on both sides of the open portion of the concave portion 3A,
Steps and cutouts similar to the steps 14 and cutouts 15 described with reference to FIGS. 9 and 11 can be formed, and the effects obtained by these steps can also be obtained in FIGS.
This is the same as described above.

FIG. 20 is a perspective view showing still another embodiment of the metal plate 6 and shows a state before the sub base plate is mounted on the main base plate. FIG. 21 is another perspective view showing the same embodiment, showing a state after the sub-base plate is mounted and held on the main base plate.

In this embodiment, as shown in FIG. 22, which is a partial sectional view in the direction of arrow A in FIG. 21, the end of the metal plate 6 located at the open portion of the recess 3A is bent upward at a right angle. A bent portion 22 is formed. Therefore,
The bent portion 22 is higher than the remaining bottom of the recess 3A. As shown in FIG. 22, a portion corresponding to the bent portion 22 at one end on the back side of the sub base plate 4 is concave (that is, a step portion 23 is formed).

In such a configuration, a remarkable effect similar to the example of FIGS. 1 to 3 can be obtained. That is, the end of the open portion of the main base plate 3 has the bent portion 22, so that it is moderately thick and smooth. For this reason, it is safe when the main base plate 3 is handled. Also, when inserting the sub-base plate 4 into the recess 3A of the main base plate 3, the lower surface of the sub-base plate 4 is formed on the metal plate 6 just like in the example of FIGS. The bent portion 22 is pushed back by a slight pressure. Therefore, when the sub-base plate 4 is inserted, a slight resistance is obtained. And the main
Immediately before the sub base plate 4 is completely mounted in the concave portion 3A of the base plate 3 (the state of FIG. 21), the stepped portion at one end on the back side of the sub base plate 4 is formed in the bent portion 22 of the metal plate 6. 23
Arrives, and the pressure from the bent portion 22 of the metal plate 6 against the sub base plate 4 disappears.
A person performing the insertion operation of the base plate 4 can obtain a so-called click feeling, and can surely know that the sub base plate 4 is completely mounted in the recess 3A of the main base plate 3. Further, the presence of the bent portion 22 prevents the sub base plate 4 from coming off the main base plate 3. In this embodiment, a step and a notch similar to the step 14 and the notch 15 described with reference to FIGS. 9 and 11 may be further formed at both ends of the open portion of the recess 3A. It is possible to obtain the same effects as described with reference to FIGS. 9 and 11.

FIG. 23 is a perspective view showing still another embodiment of the metal plate 6, showing a state before the sub base plate is mounted on the main base plate. FIG. 24 is another perspective view showing the same embodiment, and shows a state after the sub base plate is mounted and held on the main base plate.

In this embodiment, the central portion of the end of the metal plate 6 located at the open portion of the recess 3A is bent upward as shown in FIG. 25 which is a partial sectional view in the direction of arrow A in FIG. A bent portion 24 is formed, and arc-shaped notches 25 are formed on both sides of the bent portion 24, respectively. The bent portion 24 is higher than the remaining bottom portion of the concave portion 3A.
As shown in FIG. 5, a portion corresponding to the bent portion 22 at one end on the back side of the sub base plate 4 is concave (that is, a step portion 26 is formed). Other configurations are shown in FIGS.
It is the same as that in FIG.

In such a configuration, a remarkable effect similar to the example of FIGS. 1 to 3 can be obtained. That is, the center of the open end of the main base plate 3 is the bent portion 2.
Due to the presence of 4, there is a moderate thickness and smoothness.
In addition, since the portions on both sides are arc-shaped notches 25 each having a width of, for example, about 3 to 4 mm, the fingers of the operator do not enter these portions. For this reason, it is safe when the main base plate 3 is handled.

In the recess 3A of the main base plate 3,
When inserting the sub-base plate 4, the lower surface of the sub-base plate 4 is pushed back from the bent portion 24 formed on the metal plate 6 with a slight pressure, just like in the example of FIGS. It will be in the state that was done. Therefore, when the sub-base plate 4 is inserted, a slight resistance is obtained. Immediately before the sub base plate 4 is completely mounted in the recess 3A of the main base plate 3 (the state shown in FIG. 24), one end of the back side of the sub base plate 4 is attached to the bent portion 24 of the metal plate 6. The step 26 of the portion reaches and the pressure from the bent portion 24 of the metal plate 6 against the sub-base plate 4 disappears. A click feeling is obtained, and in the recess 3A of the main base plate 3,
It is possible to reliably know that the sub-base plate 4 has been completely mounted. Further, the presence of the bent portion 24 prevents the sub base plate 4 from coming off the main base plate 3. Note that, in this embodiment,
9 and FIG. 1 are attached to each end on both sides of the open portion of the recess 3A.
Steps and cutouts similar to the steps 14 and cutouts 15 described in FIG. 1 can be formed, and the effects obtained thereby are the same as those described in FIGS. 9 and 11.

In the above description, the smart media is taken as an example, but the present invention can be applied to any other type of memory card.

[0053]

As described above, according to the present invention,
By adopting a structure that can be separated from the main base plate, a memory card that can be mounted on a smaller device can be provided.

Further, according to the present invention, it is possible to provide a memory card which can be safely attached to and detached from the main base plate.

Further, according to the present invention, it is possible to provide a memory card which can be securely attached to and detached from the main base plate.

Further, according to the present invention, it is possible to provide a memory card capable of complying with various memory card standards by being detachably mounted on the main base plate.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is another perspective view showing the same embodiment.

FIG. 3 is a partial sectional view in the direction of arrow A in FIG. 2;

FIG. 4 is a partial cross section in the direction of arrow A in FIG.
It is a fragmentary sectional view showing other modes of return.

FIG. 5 is a view showing the back side of the main base plate.

FIG. 6 is a view showing another embodiment of the sub-base plate itself.

FIG. 7 is a view showing still another embodiment of the sub-base plate itself.

FIG. 8 is a view showing still another embodiment of the sub-base plate itself.

FIG. 9 is a perspective view showing another mode of the concave portion of the main base plate.

FIG. 10 is a partial cross-sectional view showing another embodiment relating to the fixing of the main base plate 3 to the metal plate.

FIG. 11 is a partial cross-sectional view showing one of respective ends located at open portions on both sides of a concave portion of the main base plate.

FIG. 12 is a partial cross-sectional view in the direction of arrow C in FIG. 2;

FIG. 13 is a perspective view showing another embodiment of the present invention.

FIG. 14 is another perspective view showing the same embodiment.

15 is a partial sectional view in the direction of arrow A in FIG.

FIG. 16 is a perspective view of the back surface of the sub base plate.

FIG. 17 is a perspective view showing still another embodiment of the present invention.

FIG. 18 is another perspective view showing the same embodiment.

FIG. 19 is a partial cross-sectional view in the direction of arrow A in FIG. 18;

FIG. 20 is a perspective view showing still another embodiment of the present invention.

FIG. 21 is another perspective view showing the same embodiment.

FIG. 22 is a partial sectional view in the direction of arrow A in FIG. 21;

FIG. 23 is a perspective view showing another embodiment of the present invention.

FIG. 24 is another perspective view showing the same embodiment.

25 is a partial sectional view in the direction of arrow A in FIG. 24.

FIG. 26 is a perspective view of the back surface of the sub base plate.

FIG. 27 is a front view showing an example of a conventional memory card.

[Explanation of symbols]

 3 Main / base plate 3A recess 4 Sub / base plate 5 Memory chip plate 6 Metal plate

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Masayoshi Sekiyama 2480 Masaki, Hiratsuka-shi, Kanagawa Prefecture Inside the Hiratsuka Plant of Mitsubishi Plastics Co., Ltd. (72) Inventor Tatsuya Hayashi 2480 Mado, Hiratsuka-shi, Kanagawa Mitsubishi Plastics Corporation Inside the Hiratsuka Plant (72) Inventor Takeshi Abe 2480 Mado, Hiratsuka-shi, Kanagawa Prefecture F-Term in the Hiratsuka Plant of Mitsubishi Plastics Corporation (Reference) 5B058 CA40

Claims (14)

[Claims] 1. A memory chip plate in which a memory chip and external terminals of the memory chip are integrated, a sub-base plate to which the memory chip plate is fixed, a predetermined size connectable to an electronic device, and A memory card, comprising: a main base plate for holding the sub base plate at a predetermined position so as to be able to be inserted and withdrawn. 2. The concave part according to claim 1, wherein the main base plate is opened at one end of the main base plate at the predetermined position, and is used to insert and remove the sub base plate from the open part. Wherein the bottom portion of the recess is made of a metal plate coated on one or both sides thereof, and a portion of the bottom portion of the recess projects higher than the other bottom portion. . 3. The memory card according to claim 2, wherein the coating is one of a thermoplastic resin and a thermosetting resin or a combination of both. 4. The recess according to claim 1, wherein the main base plate is opened at one end of the main base plate at the predetermined position, and the sub base plate is inserted into and removed from the open portion. And a bottom portion of the recess is made of a metal plate, and a part of the bottom portion of the recess protrudes higher than other bottom portions. 5. The portion according to claim 2, wherein the portion of the sub-base plate corresponding to the protruding portion is:
A memory card characterized by being recessed. 6. The memory card according to claim 2, wherein the protruding portion is a folded portion formed at an end of the open portion of the metal plate. 7. The memory card according to claim 6, wherein notches are formed on both sides of the folded portion. 8. The memory card according to claim 2, wherein the protruding portion is provided near the other end of the main base plate. 9. The memory card according to claim 2, wherein the protruding portion is a tape-like member bonded to an end of the open portion of the metal plate. 10. The memory card according to claim 9, wherein a tape-shaped member is further adhered to a back side of an end of the open portion of the metal plate. 11. The memory card according to claim 2, wherein the protruding portion is a bent portion of an end of the open portion of the metal plate. 12. The memory card according to claim 2, wherein both sides of the recess are guide grooves for guiding both sides of the sub base plate. 13. The method according to claim 12, wherein the open portion of the concave portion has substantially the same width as the sub-base plate, and a portion in contact with the guide groove is formed with a notch. And a memory card. 14. A memory card comprising the memory chip plate and the sub-base plate according to claim 1.